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A291915 Number of 6-cycles in the n-Fibonacci cube graph. 1
0, 0, 0, 2, 22, 82, 268, 742, 1902, 4562, 10452, 23068, 49432, 103364, 211764, 426354, 845626, 1655454, 3203876, 6137946, 11652946, 21944034, 41021256, 76174360, 140595760, 258061160, 471255240, 856536610, 1550048766, 2793774026, 5016560956, 8976350894 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..32.

Eric Weisstein's World of Mathematics, Fibonacci Cube Graph

Eric Weisstein's World of Mathematics, Graph Cycle

Index entries for linear recurrences with constant coefficients, signature (4,-2,-8,5,8,-2,-4,-1).

FORMULA

a(n) = 4*a(n-1) - 2*a(n-2) - 8*a(n-3) + 5*a(n-4) + 8*a(n-5) - 2*a(n-6) - 4*a(n-7) - a(n-8).

MATHEMATICA

LinearRecurrence[{4, -2, -8, 5, 8, -2, -4, -1}, {0, 0, 0, 2, 22, 82, 268, 742}, 40]

CROSSREFS

Cf. A001628 (4-cycles).

Sequence in context: A226335 A123061 A050853 * A172229 A212894 A281647

Adjacent sequences:  A291912 A291913 A291914 * A291916 A291917 A291918

KEYWORD

nonn,easy

AUTHOR

Eric W. Weisstein, Sep 05 2017

STATUS

approved

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Last modified October 21 20:51 EDT 2018. Contains 316428 sequences. (Running on oeis4.)